יחזקאל כט:ג פירוש: רש״י

the great crocodile Since all the greatness of Egypt and all its plenty comes though the Nile River, the prophet compares its king to a crocodile and its people to the fish of the river.

My river is my own I do not need the heavenly powers, for my river provides all my necessities

and I made myself With my might and with my wisdom, I enhanced my greatness and my dominion.